I grabbed a copy of the newest 1.6 WED and just like the 1.5 when i try to move from one part of the airport to another part, in the viewer.. the arrows zoomed be way off the continent. The move tools for the viewer are way too sensitive for me to use.
I reported the bug in the 1.5, as did others, so I was happy to see 1.6 out. But they ignored the problem. I can only use the 1.4 version.
I guess what can you expect when something is free.